1489-A1C100 | Allen-Bradley Miniature Circuit Breaker 1 Pole, 10A, 277VA

The 1489-A1C100 is a miniature circuit breaker (MCB) designed to protect electrical circuits from overcurrent conditions. It is a 1-pole, 10 amp device rated for use at up to 277V AC. This breaker belongs to the 1489-A series from Allen-Bradley and features thermal-magnetic trip characteristics for long-time and instantaneous protection. It is typically used in control panels, lighting systems, or small distribution applications. The MCB helps isolate faults quickly to prevent equipment damage and improve system safety. It’s widely accepted in commercial and light industrial environments.

This breaker is rated for 277V AC and 48V DC, providing versatility in both AC and DC low-voltage systems. The high AC voltage rating makes it compatible with commercial lighting systems and industrial control circuits. The ability to operate on DC allows use in specialized control applications. The wide range of supported voltages enhances the breaker's usefulness across multiple industries. It is certified for safe operation within these voltage limits.

The 1489-A1C100 is a single-pole (1P) circuit breaker. It is designed to interrupt current in one line of the circuit—typically a phase conductor. This simplifies installation and makes it suitable for single-phase loads or branch circuits. Single-pole breakers are compact and help save space in panel assemblies. The design is widely used in distribution boards, lighting control, and industrial control panels.

Yes, this breaker supports both AC (up to 277V) and DC (up to 48V) operation. This makes it suitable for mixed-voltage environments, including modern industrial and building automation systems. Dual-rated MCBs simplify inventory and design choices. They reduce the need for separate breakers for AC and DC circuits. Always check derating guidelines when used in DC circuits for safety.

Yes, the breaker is DIN rail mountable, allowing quick and secure installation in standard electrical enclosures. The DIN clip ensures a firm hold and enables easy removal or replacement. This mounting style is widely used in modular control systems. It reduces panel build time and supports flexibility in equipment layouts. It also supports secure mechanical grounding via the rail.